Open source software

The Week in Chess (TWIC)

Mark Crowther has been working tirelessly for many years on producing his weekly collection of game scores from major tournaments around the world. Without Mark's work - which he distributes on the internet for free - our game database would be significantly smaller.

Mark provides live tournament coverage , chess news, and many other worthwhile services on theweekinchess.com.

Premium members

The generosity of premium members has helped fund the development work that has made Chesstempo what it is today. Thank you to all those who have contributed financially, your support is very much appreciated.